Dulles Glass and Mirror was professional from start to finish. They called the day before, gave me a 2 hour window, then called 1/2 hour before and came as designated. They used mats, were very polite, clean, professional and did a perfect job. I highly recommend them for a quality glass shower door. Although the price is higher than others for a shower door, the quality is much better. I was tired of my shower door rattling. This door is a very heavy glass complete with a clear coating. I love it.